Regeneration of Activated Carbon Fiber Using Microwave under Vacuum Condition

2013 ◽  
Vol 373-375 ◽  
pp. 2019-2023
Author(s):  
Quan Li Feng ◽  
Chen Xu Wang ◽  
Xue Qian Wang ◽  
Ping Ning
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Mass Loss ◽  
Carbon Fibers ◽  
Irradiation Time ◽  
Vacuum Condition ◽  
Activated Carbon Fiber ◽  
Activated Carbon Fibers ◽  
Total Mass Loss ◽  
Microwave Regeneration

The purpose of this work was to explore the application of microwaves for the regeneration of activated carbon fibers saturated with ethanol under vacuum condition. The efficacy of the regeneration was analyzed by the rate of desorption and mass loss. When the microwave power was 680W , the dosage of activated carbon fiber was 3.5g , the degree of vacuum is 0.05MPa and the microwave irradiation time was 180s, the desorption rate was up to 95.3% and the outlet concentration of ethanol was 97.5%. The adsorption of activated carbon fiber after microwave regeneration for many times was larger than the fresh activated carbon fiber. And the rate of total mass loss was 3.54%.

Regeneration of Activated Carbon Fiber by Microwave under Nitrogen Condition

2013 ◽  
Vol 373-375 ◽  
pp. 2024-2029
Author(s):  
Chen Xu Wang ◽  
Xue Qian Wang ◽  
Ping Ning ◽  
Quan Li Feng
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Mass Loss ◽  
Carbon Fibers ◽  
Gas Flow ◽  
Irradiation Time ◽  
Activated Carbon Fiber ◽  
Nitrogen Gas ◽  
Total Mass Loss ◽  
Microwave Regeneration

The purpose of this work was to explore the application of microwaves for the regeneration of activated carbon fibers saturated with ethanol. The efficacy of the regeneration was analyzed by the rate of desorption and mass loss. When the microwave power was 528W , the dosage of activated carbon fiber was 3.0g , the nitrogen gas flow rate was 1.4m3/h and the microwave irradiation time was 180s, the desorption rate was up to 90.2% and the outlet concentration of ethanol was 95.6%. The adsorption of activated carbon fiber after microwave regeneration for many times was larger than the fresh activated carbon fiber. And the rate of total mass loss was 4.74%.

The Catalytic Reduction of Nitrogen Oxide Over the Catalysts Supported on Activated Carbon Fibers

1994 ◽  
Vol 344 ◽  
Author(s):  
Yun Lu ◽  
Ruowen Fu ◽  
Yishan Chen ◽  
Hanmin Zeng
Keyword(s):  
Nitric Oxide ◽  
Activated Carbon ◽  
Carbon Fiber ◽  
Nitrogen Oxide ◽  
Carbon Fibers ◽  
Catalytic Reduction ◽  
Activated Carbon Fiber ◽  
Activated Carbon Fibers ◽  
Catalytic Activities ◽  
Composite Series

AbstractCopper-series, nickel-series, and copper-cobalt composite-series catalysts supported on activated carbon fiber were prepared in this paper. Their structures and catalytic activities for the reduction of nitric oxide with ammonia were investigated simultaneously.

Adsorption and Separation Research of CO2/CH4 on Modified Activated Carbon Fiber

2014 ◽  
Vol 986-987 ◽  
pp. 13-16
Author(s):  
Qin Yuan ◽  
Hong Hong Yi ◽  
Xiao Long Tang ◽  
Kai Li ◽  
Fen Rong Li ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Carbon Fibers ◽  
Adsorption Property ◽  
Activated Carbon Fiber ◽  
Separation Performance ◽  
Activated Carbon Fibers ◽  
Modified Activated Carbon ◽  
Chemical Reagents ◽  
Modified Adsorbents

In this paper, activated carbon fibers were modified by different chemical reagents. The modified adsorbents were used to investigate adsorption and separation performance of CO2/CH4 gases mixture, and then it could get the best modified adsorbent. The experimental results show that amine can't great grafting on activated carbon fiber. Compared with blank activated carbon fibers, the adsorption property of CO2 did not have much influence on the activated carbon fiber modified by amine. However, it can increase the nitrogen functional groups and the specific surface area on the surface of activated carbon fiber that were modified with nitric acid and ammonia. The above two points were conductive to the adsorption and separation of CO2/CH4 mixture gases.

Study on Mechanical Properties of Activated Carbon Fiber Reinforced Medium Density Fiberboard

2012 ◽  
Vol 538-541 ◽  
pp. 1619-1623
Author(s):  
Yu Yang ◽  
Cheng Liu ◽  
Cheng Han
Keyword(s):  
Mechanical Properties ◽  
Activated Carbon ◽  
Carbon Fiber ◽  
Carbon Fibers ◽  
Medium Density Fiberboard ◽  
Activated Carbon Fiber ◽  
Activated Carbon Fibers ◽  
Medium Density ◽  
Fiber Reinforced ◽  
Carbon Fiber Reinforced

Activated carbon fiber reinforced composites is a kind of new material in ceaseless development which is receiving more and more attention because of its excellent absorption and mechanical properties. This article mainly studies the influence of polyacrylonitrile based activated carbon fibers on the mechanical properties of medium density fiberboard (MDF); add the static bending strength and internal bonding strength (IB) of medium density fiberboard in the PAN-ACF through comparison test and get the result of the influence of polyacrylonitrile based activated carbon fibers on medium density fiberboard.

Preparation and Characterization of Activated Carbon Fibers from Jute Fibers by Phosphoric Acid Activation

2012 ◽  
Vol 184-185 ◽  
pp. 1110-1113 ◽  
Author(s):  
Li Fen He ◽  
Qi Xia Liu ◽  
Tao Ji ◽  
Qiang Gao
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Phosphoric Acid ◽  
Carbon Fibers ◽  
Activated Carbon Fibers ◽  
Optimum Conditions ◽  
Activation Time ◽  
Activation Temperature ◽  
Jute Fibers ◽  
Activating Agent

Various jute-based activated carbon fibers were prepared by using jute fibers as raw materials and phosphoric acid as activating agent. The effects of three main factors such as concentration of activating agent, activation temperature and activation time on the yield and adsorptive properties of active carbon fibers were investigated via orthogonal experiments. The surface physical morphology of jute-based activated carbon fiber was also observed by using Scanning Electron Microscope. Results showed that the optimum conditions were phosphoric acid concentration of 4 mol/L, activation temperature of 600 °C and activation time of 1h. The yield, iodine number and amount of methylene blue adsorption of the active carbon fiber prepared under optimum conditions were 37.99 %, 1208.87 mg/g and 374.65 mg/g, respectively.

scholarly journals Enhanced Photo-Catalytic Performance of Activated Carbon Fibers for Water Treatment

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1794 ◽  
Author(s):  
Konstantinos V. Plakas ◽  
Athina Taxintari ◽  
Anastasios J. Karabelas
Keyword(s):  
Activated Carbon ◽  
Carbon Fibers ◽  
Treatment Time ◽  
Catalytic Performance ◽  
Dip Coating ◽  
Activated Carbon Fiber ◽  
Activated Carbon Fibers ◽  
Tio2 Sample ◽  
Phenol Adsorption ◽  
Electrophoretic Coating

The synthesis, characterization, and performance of composite photocatalytic adsorbents are investigated in this work using the dip-coating and the electrophoretic coating methods for the deposition of titanium dioxide (TiO2) on porous activated carbon fiber (ACF) substrates. The adsorption and photocatalytic efficiency of the synthesized catalytic adsorbents were compared using phenol as the model pollutant. Both immobilization techniques resulted in composite ACF/TiO2 adsorbents characterized by large surface area (844.67 ± 45.58 m2 g−1), uniform distribution of TiO2 nanoparticles on the activated carbon fibers, and high phenol adsorption. The method and the treatment time affected the phenol adsorption, while the highest sorption was determined in the case of the ACF/TiO2 sample prepared by the electrophoretic coating method (at 20 V) for an electrolysis time of 120 s (7.93 mgphenol g−1ACF/TiO2). The UV-A irradiation of most ACF/TiO2 samples led to a faster removal of phenol from water as a result of the combined sorption and heterogeneous photocatalysis. The stability and the effective regeneration of the most promising composite photocatalytic adsorbent was proved by multiple filtration and UV-A irradiation cycles.

scholarly journals Preparation and photocatalytic activity characterization of activated carbon fiber–BiVO4 composites

RSC Advances ◽  
2018 ◽  
Vol 8 (43) ◽  
pp. 24665-24672 ◽  
Author(s):  
Chencheng Zhang ◽  
Pingfang Han ◽  
Xiaoping Lu ◽  
Qinghui Mao ◽  
Jiangang Qu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Performance Evaluation ◽  
Activated Carbon ◽  
Carbon Fibers ◽  
Photocatalytic Performance ◽  
Activated Carbon Fiber ◽  
Activated Carbon Fibers ◽  
Experimental Conditions ◽  
Characterization Of Activated Carbon

Herein, we describe the hydrothermal immobilization of BiVO4 on activated carbon fibers, using Reactive Black KN-B photocatalytic performance evaluation and establishing the experimental conditions yielding maximalphotocatalytic activity.

Electrosorption Desalination by Activated Carbon Fibers Electrode

2012 ◽  
Vol 610-613 ◽  
pp. 1710-1717
Author(s):  
Gui Zhong Zhou ◽  
Xuan Wang ◽  
Zhao Feng Wang ◽  
Shu Qing Pan ◽  
Shao Xiang Li
Keyword(s):  
Activated Carbon ◽  
Carbon Fibers ◽  
Adsorption Process ◽  
Removal Rate ◽  
Physical Adsorption ◽  
Activated Carbon Fiber ◽  
Activated Carbon Fibers ◽  
Initial Concentration ◽  
Total Adsorption ◽  
Scanning Electron

The activated carbon fiber(ACF) electrodes were prepared for electrosorption desalination. The electrodes were analyzed using scanning electron microscope (SEM), and the desalting efficiency was represented by the removal rate of Cl-. As a result, desalting efficiency decreases with increasing initial concentration of Cl-, whereas the total adsorption capacity increases. The most suitable voltage for electrosorption desalination is 1.2 ~ 1.4V. The electrosorption desalination achieves the best results while the distance between two electrodes is 1.0cm. Electrosorption plays a more important role in the adsorption process compared with physical adsorption. The removal rate of Cl- is obviously improved by using ACF electrode modified by HNO3 and KOH and desalination ratio of the electrode treated with KOH is increased by 16.5%. Therefore, the ACF electrode would be suitable for using in the application of electrosorption desalination.

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